Ski binding



Oct. 1, 1940. J. ElGENHEER 2,216,662

SKI BINDING Filed June 7, 1959 Patented Oct. l,

vPATENT OFFICE SK! BINDING Jakob Eigenheer, Zurich, Switzerland, lassignoi' to Belmag Zurich, Belenchtunxs-Und Metallindustrie A.G., Zurich, Switzerland Application June 7, 1939, Serial No. 277,897

In Switzerland Jul! 15, 1938 3 Claims. (Cl. 280-11.35)

The subject of the present invention is a skibinding and more particularly a front pull binding, wherein a stretcher for the heel pull-member is pivotally mounted in front of the toe cheeks 5 on the back of the ski.

The binding according to the invention permits of a rapid adjustment of the heel loop and of the pull exerted thereby on the shoe.

I'he accompanying drawing shows a preferred l form of construction oi the subject of the invention, wherein:

Fig. 1 shows a side elevation of the binding together with a portion of the ski.

Fig. 2 is a plan of Fig. 1. l Fig. 3 is a side elevation, and

Fig. 4 is a plan to a larger scale. Figs. 5, 6 and 7 are sections on the lines V-V, ITI-VI, VII-VII of Figs. 3 and 4.

In the form of construction of the ski binding shown in the drawing there is provided as the heel pull member a cable I to which there is applied at the heel portion a rubber tubing 2 whichserves to guide the cable around the heel. The binding is provided with toe plates, known per se, of which the vertical portion is provided with supports 4 for the cable so that this can be selectively engaged with one of the supports I or can be passed below the horizontal toe plate portion 3. Over the cables there is provided in the known manner a cable protecting spirally wound wire. In front of the toe irons there is located a stretcher 5 which is pivoted about a bolt 6 of the guide member 1. The guide member 1 is guided in the notched plate l of which the cross-sectional shape will appear from Figs. 6 and 7. 'Ihe guide member is provided with a T-shaped bar 9, of which the flanges I0 areengaged by guide bars Il of the notched plate 8. In this manner the movement of the guide mein ber in the notched plate 8 is rendered possible. In the guide member 'I a catch I2 is mounted for vertical movement in that it passesby means of a bolt I3 throughv a slot I4 of the bar 9 of the guide member 1. Lugs I5 facilitate the engagement of the catch I2 and a lifting and lowering thereof. The bars II, as shown in Figs. 3 and 4 are provided with notches I6 with which the lower end of the catch I2 can engage. When the catch has engaged with one of the notches I6 the. guide member 1 isno longer movable in the longitudinal direction.

The connection of the cable I to the stretcher 5 is effected through tension springs I1 formed of spirally wound wire of suitable thickness. The iront ends of the tension springs I1 are hingedly connected by a bolt Il to the'stretcher l. The rear ends are spaced apart at the correct distance by a strap I9 so that the rear ends of the springs are further apart than the front ends of the springs sothat a gradual passage of the cable 5 under the toe irons I is possible without it being necessary to eifect for this purpose a sudden tension, and consequently incur the liability of fracture.

The connection of the cable I to the springs I1 10 or to the strap I9 is effected by means of screws 20 which are movable on the cable, for example on the cable closing sleeve, and engage with internally screw-threaded sleeves 2 I. These sleeves 2| are held immovable in the springs I1 or in the 15 strap I9. Against the front end of the hollow screw 2U there bears the cable end member 22 which is pressed upon the actual cable. By ad-v justing the screws 20 it is also possible to effect an additional variation of the width of the heel pull loop, similar variation being also possible by the notches I I and-catch I2 and also by the construction of the guide member 1 and of the stretcher 5 to be described hereinafter.

The guide member 1, as shown in Fig. 5, is pro- 25 vided with an N-shaped slot 23 in which there is. guided the bolt 6. According to whether the bolt l is engaged-in the front or rear limb of the slot 23', the width ofthe cable loop can be modified.

The stretcher itself, as in the, form of construction according to the drawing, may be formed as an extrusion casting. It may however also be bent from sheet steel, whereby it provides for greater strength. 35

What I claim is:

1. Ski binding comprising a cable as a heel pull member, a cable protecting sheath enclosing said cable, cable end members rigidly secured to thej two ends of said cable, toe irons adapted to be secured to the ski, a stretcher lever located in front of the toe irons, a pair of tension springs hinged to said stretcher lever and operatively connected with said cable end members, a notched plate adapted to be secured to the back of the 45 ski, a guide member adjustably guided in said plate, said stretcher lever adjustably engaging said guide member.

2. Ski binding comprising a cable as a heel pull member, a cable protecting sheath enclosing 50 said cable, cable end members rigidly secured to the two'ends of said cable, toe irons adapted toy be secured to the ski, a stretcher lever locatedin front of the toe irons, a pair of tension` springs hinged to said stretcher lever and operatively vcon- 55 nected with said cable end members, a notched plate adapted to be secured to the back of the ski, a guide member adjustably guided in said plate, said stretcher lever adjustably engaging said guide member, and means for locking the guide member relatively to the notched plate, said means including a catch mounted for vertical movement on the guide member and engaging with the notches of the notched plate.

3. Ski binding comprising a cable as a. heel pull member, a cable protecting sheath enclosing said cable, cable end members rigidly secured to the two ends of said cable, toe irons adapted to be secured to the ski, a stretcher lever located in front of the toe irons, a pair of tension springs hinged at one end of each to said stretcher lever and operatively connected with said cable end members, a notched plate adapted to be secured to the back of the ski, a guide member adjustably guided in said plate, said stretcher lever adjustably engaging said guide member, a strap operatively connecting together the other ends of the tension springs, and means for adjustably connecting the ends of the cable to said springs, said means including internally screw threaded sleeves screwing into the ends of said springs and screws on said cable adjacent said cable end members and screwing into said internally screw threaded sleeves.

JAKOB EIGENHEER. 

